{
  "manageEntity": {
    "action": "Save",
    "entityId": "1156993580",
    "entityType": "Track",
    "nonce": "0x92815f89e86d111ad3166fc996cf90bc83a1adc6dca5d38ace4536ea0a5b00ae",
    "signature": "0x30519fd861242da27bdeec605ddc6e6235ec36ca4ec298e589d2a9692008f48b54142969b511e6ab3b77759df97068686f432d6d4967a76c54dd6e3cec540e681b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}