{
  "manageEntity": {
    "action": "Update",
    "entityId": "323879851",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieradayw2mm7c3xorfozu4dwoq223pbuy4tp2hkabv6sdlg3xh4dzaca\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":320679866}]}}}",
    "nonce": "0xc89a726cb922f1172f67bad413439a6e35256df86e849e2ebc29bdaaaaf44fb1",
    "signature": "0x3367a4edf9e47b9abf4eb0bceeaf9a86123aaf6fa7dd2df8d314cd66b44098b8658d58c89cf40b8927f0c8f58e1ae94d175560583103f24043f5975d29f6c9be1b",
    "signer": "0x12aD0F6A7Bf3ef1Fb0FFE6e1eF9E50BCa3149Af5",
    "userId": "323879851"
  }
}