{
  "manageEntity": {
    "action": "Save",
    "entityId": "851031334",
    "entityType": "Track",
    "nonce": "0x7db348f65152e7688bb992834b77cb231d3bec4fd84e2daab088160da78819d8",
    "signature": "0x5dff955fa6cf7a8efb7639a63dd5d9dd968c1af92a01641f085513db880d093c40777f7127ad337c8d3202d9a232ada1ca63d26c2ae04c798a33ad694982dfd61b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}