{
  "manageEntity": {
    "action": "Save",
    "entityId": "1113462",
    "entityType": "Track",
    "nonce": "0x0f6e4afa52d5f5d4d45bc7ab10157190ded4742dcc61be795d999279998a383b",
    "signature": "0x4afe67c2dd9c72bc8954cdf17b028efd9dc4692e9c364888d1fed148a61a5cca0ca309c43059affebbd786999f9f48f5bea2f0bccbe2aa7f531c649c0bee73e71c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}