{
  "manageEntity": {
    "action": "Update",
    "entityId": "773564093",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7276861506ba9d3973f636221625d354643463d723f63507cb00bfc69c689f97",
    "signature": "0x0b4db38a91420f35c05071a93a3c8cc7c8f1db99bf2bb253ba8f101e4d354b07574796455582f74f1a91ad9f850ec80192a3ced12d287b488cd99ad78b1181151b",
    "signer": "0x87562E04B9BD867b298207b5A6C7D5dBe09971a6",
    "userId": "773564093"
  }
}