{
  "manageEntity": {
    "action": "Save",
    "entityId": "2036811435",
    "entityType": "Track",
    "nonce": "0x50cb88edbc6b978f34bf26def70479101020a8de3dc079468fefea850a3e22ba",
    "signature": "0xa997aec332ffff4ccc4789469fd8e6145747f064745aae480f2ed880069335521be9a45ae2e54db6254a8d4a550499c26035331903f0a681a2da95d2c2731d301b",
    "signer": "0x09603A9A410a583B9E14515b406FeBBc48b0AED8",
    "userId": "83237"
  }
}