{
  "manageEntity": {
    "action": "Update",
    "entityId": "138655938",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcbc129227de752ee73f8055e0eaba8a85738f803cc2e312adccbe2573dee22c3",
    "signature": "0x420f1aec130a6fe17d0a8f105beba0b8a3660feb46e5d07b45cb4202ead695603a19aa44f582fa60a2349e4e6a8cc9aeba628276255dd5d5926cdebb57fa1eb81b",
    "signer": "0x87f8538D39d3B2C6ce4d4343De4b6Aa2d5e75676",
    "userId": "138655938"
  }
}