{
  "manageEntity": {
    "action": "Save",
    "entityId": "208565234",
    "entityType": "Track",
    "nonce": "0xaf3b30723c70f0df4fcb7f5e2198b5d0062e06f11730bbcd065343ee10a2e291",
    "signature": "0x76a3a8fa62030bed66164330a8d10fc06bb3145b05a9d10e9e39a8946a7e8fda3a13fb969c91e163398ca96c9bcc7a82df0259631f754af7b693110090030fec1c",
    "signer": "0x658704f5E9496548E3179a01fe1F54ac2a0b77a4",
    "userId": "188933"
  }
}