{
  "manageEntity": {
    "action": "Save",
    "entityId": "1011437188",
    "entityType": "Track",
    "nonce": "0xdb95fc3082256f8978508d0f8ce89e404cbc8e2069128e56211c8ea95668a1a4",
    "signature": "0x6a2d6689b9dd13db37d805da83fd5a80ae5bab8bfac597b9e845131cdb7feebc4504e5edd34cbe6f2173d23f683a1d61350f09c08064d7d196bd2edd684b70841b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}