{
  "manageEntity": {
    "action": "Save",
    "entityId": "1236290752",
    "entityType": "Track",
    "nonce": "0x802e6a76867f3bfdc9bb69e76a666012d5bbc210e5c49e8c35fd4c0d1f8cde9b",
    "signature": "0x04276957b9dcb67a30e3213f0f95bca35b812c8435ae1037b28cbee1f750a3844bab5948489148eeaa9a71f0ff22fc651aa7902b987ff848c753ac6bc27253651b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}