{
  "manageEntity": {
    "action": "Save",
    "entityId": "1157059451",
    "entityType": "Track",
    "nonce": "0x96cd057be51a181035822b88574fdbb496678047db2fc6fb5e6a64d2234a923a",
    "signature": "0xa6bc07037dcb1385f5f78b77d124a73f71d609be0b1c7b3d48a7a1276731bc9e7c5c39f9e2e08d5bc61fa5feea1ffd4f9a62bbba8885783700a2bd1d993b1e021c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}