{
  "manageEntity": {
    "action": "Save",
    "entityId": "168182073",
    "entityType": "Track",
    "nonce": "0x3591146249200e262e1ff86fbcd698f619c9d8d9ddc3f9c1b37445f5a26b3cef",
    "signature": "0x68d2508d4fb46d1fcf5ae452ac76143caed0765ae617f0d9e69018f042bd9b5650d43d804df572072407b64f04c5864ac57d7d30049ac61069db3e101bf584481c",
    "signer": "0x92d3eeF18F09b6dEA8B68410222af4813dA7727F",
    "userId": "719754"
  }
}