{
  "manageEntity": {
    "action": "Update",
    "entityId": "301554607",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x43357a595cca0cbb91d0f5290413fa64f4ba2a5f84bd16983e9d9c35d4727fde",
    "signature": "0xeb7aab29f7f51c943c937f5487b40997d086a7d162a7d8696d897099a11c78a9039978e281bf2b70584aeb1d8a1a888d2266ac17f41db029bc1e0484e5750eab1c",
    "signer": "0x2B58D0E25Ee8743190c8Fe1875c801d083066b4B",
    "userId": "301554607"
  }
}