{
  "manageEntity": {
    "action": "Update",
    "entityId": "323879851",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierace7dvosdeq3yrgdv3aiywdihtmkgtq4k4e6fsb32eku5ik4yhcka\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":320679866},{\"type\":\"playlist\",\"playlist_id\":557879909},{\"type\":\"playlist\",\"playlist_id\":336192669}]}}}",
    "nonce": "0x527a0cf0e9259099894134edefa0122a587705d3aef08a85de6acd4f128b9d68",
    "signature": "0xa2c48791e1e4561c9f6a025b2ff446ab7f174707dcc2f7a9fae1821aa821aa734f1f3b3ff3a2215391050f21febcede2d14a2f54d115cb72331e980e631ae5821b",
    "signer": "0x12aD0F6A7Bf3ef1Fb0FFE6e1eF9E50BCa3149Af5",
    "userId": "323879851"
  }
}