{
  "manageEntity": {
    "action": "Save",
    "entityId": "986931385",
    "entityType": "Track",
    "nonce": "0x50aacac75d0f6603c541e0055c39f0dde85fda033a0df2f7c95434d0e3e4f3e8",
    "signature": "0xa6e0492baa20b162b22c1e353d0fdb03f1706a6063b3950e6132d63c44fda3a32855fe4b38460ccc2a795e15de362e73896e0fe334b9ddb6fc47377c0d4571af1c",
    "signer": "0xA66d5981794A5e084FBD9adBFF28F465924fb9a9",
    "userId": "980224167"
  }
}