{
  "manageEntity": {
    "action": "Save",
    "entityId": "1178686580",
    "entityType": "Track",
    "nonce": "0xd4297e96f26a3ae68dd772e967f6d3cceb809a3b2b86725d72e21386923d7447",
    "signature": "0x29eff259a1c6189af59f333dc701dfb11126d55dc052c4b429b4316a44f82ba727a8736a200ba27800d75d401f5db712a52903ef44ecbd480885c1fb791681de1c",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}