{
  "manageEntity": {
    "action": "Save",
    "entityId": "1136960728",
    "entityType": "Track",
    "nonce": "0x122e6cfb15f1d5287cf6e70fa71c6e7bebf506c9bb33db30dc34905673ae3181",
    "signature": "0x9447fcf037392f31f1df575e0d23e3c8c59c30ce956992b6513f596bab619d3a0921a879e8d377a8392056a103c0d3ff226f879fd329b1dd3ebd5c53e77f4dd11b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}