{
  "manageEntity": {
    "action": "Save",
    "entityId": "829966930",
    "entityType": "Track",
    "nonce": "0xa41a04884aa69e6464c4a636cc24c58b6b3ad3a48c486e9497c69f67b3de8de6",
    "signature": "0x6c062c1e056b14bb5b6f53fce4e6c27e8b9285ba683d085d9d01e7ee966e477535caa3c27b9a79b7f8b3c260802009456bdc51c241e2d754cba43de22c2cc23c1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}