{
  "manageEntity": {
    "action": "Update",
    "entityId": "640804276",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x47c2278311afce5e95031f050694fa9efe05c20a8b2a4d7e79e030be4b7292f7",
    "signature": "0xe781ab1eff909edac02e2c1e4aacc897036bbd4b446c54ba83c8a6b04b93f1d43b1f6ab6a94eab8af69e2a1479112c39d8b7bb57dad58e3a84f5e702f0d6576e1c",
    "signer": "0x2fff57D5628D87Ce98d02775C9cF63dB765aa6c5",
    "userId": "640804276"
  }
}