{
  "manageEntity": {
    "action": "Update",
    "entityId": "566039294",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf7f4d6f25c2a99f3ac0db8e48e0db49df71455219644c84e0f2519eb9574f8ea",
    "signature": "0x21feef0923899d4c90d66448822d95387d94b8ac67cf0bb091b1880c0e64d29b0b12271479bb7f39abf6e74ba545963feb61ae75517b57965e575daaef9758df1b",
    "signer": "0x52ccA1a924A62856C3D987aed326D80BA21AE1A1",
    "userId": "566039294"
  }
}