{
  "manageEntity": {
    "action": "Update",
    "entityId": "300651296",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierabu5l5u7ti3kaopthpy2b2y3i5kx66uo2ruglmmw73njz2s3d4laq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":928397686}]}}}",
    "nonce": "0x5fbbac72b33737755d31cf36cb297dbdb3c6233af23fa04c87f5d69bc19aa8a1",
    "signature": "0x74b4c0c5e4739ee1864d3acf27056b686af5323f18b4bec228b726c420c144332b5a12a8482a881d0aa9ae0e744994431a18b3bc2c30b536bf1d463c764740cd1b",
    "signer": "0xbaF9F057fb5002254dec6942185E58F83129dC07",
    "userId": "300651296"
  }
}