{
  "manageEntity": {
    "action": "Update",
    "entityId": "211337551",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x93355cdb5cca9db3dceaeee854ebab8ba7977886db73d9bd3a04a5112d616fb2",
    "signature": "0x52490be1aa1ec4030d2cf3ab53c4a74af23c7848462341cf54582783357394e10dbd85167be576a475b2ff7e964eeb76c1e2b93955600a6f52f30fc67c11527b1b",
    "signer": "0x334928d7EC319B545378C7BB077Ad7A7970c11cF",
    "userId": "211337551"
  }
}