{
  "manageEntity": {
    "action": "Save",
    "entityId": "48119836",
    "entityType": "Track",
    "nonce": "0xa9307ac078e06a78a07234f5d78309b8b4f52d2f8f83a57f2d1e40b45eaf34cf",
    "signature": "0x57abd22fc4024de50304912ec485dcf9ed82f6633b4b1a8acbdd1fc020f603a256d8bdc21723c3157ff8f32da8e93817a40efa366d0532516377386cc1ed3d441b",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}