{
  "manageEntity": {
    "action": "Save",
    "entityId": "1411451964",
    "entityType": "Track",
    "nonce": "0x949b0af2b37d3d6604a6e874ca79dfc9dcc6b4bcd13d7e5a6632e232eabfc176",
    "signature": "0xea7a917e5d19fdbeea56b01ef6f80c76f26d4ad820f3d91b5738930ae7b4555574470620cf9e288adf920e118e76c375e0a4cecdca2b84e277e3b5fab48dcd2c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}