{
  "manageEntity": {
    "action": "Save",
    "entityId": "865042194",
    "entityType": "Track",
    "nonce": "0xf0fc7784609aa2716189e20079303f21ce9ba53e0b2844858522e2aba1b0038e",
    "signature": "0x98cecbc6edd5b14bc7cebd37a9213fed225a3f54d85228e459b28dd3c565ad3c69e944ee909ec8b9f2fa6e95591d01ff51adebfa8e32aa0da32803f79e66eb0c1c",
    "signer": "0x92328BFDeD38C9a9De6E253A0CF5CB46A3B28611",
    "userId": "831117417"
  }
}