{
  "manageEntity": {
    "action": "Update",
    "entityId": "478795474",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbf039aee05df155c89c3c5ba58413320a44b976a9702b5c35c549336169fa43c",
    "signature": "0x00c3d8185146e81824d01cf158a3be4ecd46297824d4ad5b47cd49066b74ac8a0dd3ebaefcc2ba6894d9ec39b392c0edb6353f78cfc36c62922f1150b75b5fa51b",
    "signer": "0xf1f9a3dD79fc96Cf365C6297693523Ab602b8C6f",
    "userId": "478795474"
  }
}