{
  "manageEntity": {
    "action": "Save",
    "entityId": "753979634",
    "entityType": "Track",
    "nonce": "0x35a77dcb7c00e4c1a4247d1c82c9d5d99833632891837f4d6f61ce86819f50d9",
    "signature": "0xb7da2c428db4faabb8dba5c5d864e20ec464d6fddd811ad4118c540143edfd8d4df671018387143c5bd1c1d25d2491512b264dd2b278eefd8e08bed153dc328b1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}