{
  "manageEntity": {
    "action": "Save",
    "entityId": "170709",
    "entityType": "Track",
    "nonce": "0x0dd03d3637b7de27210609734e45757a441d30b3df8cb24b8697b564577fffe5",
    "signature": "0x1972dd07bf3bc4f3ed7c8fea0fe0fb04ae2e0c78f7be125c26f77196ad8748c60857fea3a2ea94366c5e17532911cb0a8e77eca2619579a8081392b219bf3a401b",
    "signer": "0x0168976438910D2f5330323a0d0141Fb4Af95032",
    "userId": "317847"
  }
}