{
  "manageEntity": {
    "action": "Save",
    "entityId": "1514339265",
    "entityType": "Track",
    "nonce": "0x99eeb03e7ecd6b2580de50abb7a6df9c3bd41764107f7c52175766da0ec572bb",
    "signature": "0xf181991235ad0c5ed3ed4257496f903205f02725914d6457d30be03cccf43dab72813162c7fa107e3312528074a64ca4abba0844494b9d9bfaecb435a42376ad1c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}