{
  "manageEntity": {
    "action": "Save",
    "entityId": "711198795",
    "entityType": "Track",
    "nonce": "0x810fa3f2262f7f9756150af3fc66b1eb24a32581e9198d5294e62af899a25b09",
    "signature": "0xf4ab85b503d01bd7260f969c93fc67cfcf2b3b2bbec5859536416d36bae0c7b26fa05b223883c1cffe3563ab2443e3d088b2ba359edbb229f5a64442474b46891c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}