{
  "manageEntity": {
    "action": "Save",
    "entityId": "831629138",
    "entityType": "Track",
    "nonce": "0x8a3dcd7b8c71f3dc40548585ad9d9b77cc55b6b88f936549c36ee4ac9f7160b5",
    "signature": "0xf9a4f868f303dc961b606df92000b61932f0b7390d580b4b94bc08100c285d2a335cdc2fed6421eba5f84844e7c3dc33e102ff4e5f9b09ce8e4b4990b978e28e1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}