{
  "manageEntity": {
    "action": "Update",
    "entityId": "40456963",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x772603b32ee73917cf0b67d5c8672f4f9e602ca6fc6934b84c47f9250ebfcdb7",
    "signature": "0x146e2fc9e450bdbe7eec71953dddb666cb62f72e6812af9b69d981b59fb05c9c2af3652ac0925f79090aa32c668372522d1e0e08ae6c163d51993dfac71009821b",
    "signer": "0xc03B0DC91D4dd69BB843F957bAe8D3B7aA1317EB",
    "userId": "40456963"
  }
}