{
  "manageEntity": {
    "action": "Save",
    "entityId": "1952585567",
    "entityType": "Track",
    "nonce": "0x7674f019d29cc0931b880da5e93241b2b0608a108d856a87399c2db9da3ecd7d",
    "signature": "0x466456b6a8948ac73e33bd485a4c005b0b4d81b2164faf3fdd1555f7919376e23e9901d8796c231442eff1ba14f0f4ce55d3af20d343b24fc3541dfc93bb86f51c",
    "signer": "0x24ad346ba322EAa6531a5c9E1E9cD0a0A60DF918",
    "userId": "876143960"
  }
}