{
  "manageEntity": {
    "action": "Save",
    "entityId": "1041696",
    "entityType": "Track",
    "nonce": "0x94ed4cc98600e65d8f6bae22035727d24d6060f71011bb3007c74d5f4ac9edea",
    "signature": "0x5b3129e66e900b341be0b24cc526d31b16a82783cfd97fe86260575166411185246e73352982d28aea777f65fe7cd3d3e7e04fc15b4582b570db7197a65642bb1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}