{
  "manageEntity": {
    "action": "Save",
    "entityId": "1606100604",
    "entityType": "Track",
    "nonce": "0x811dc6a3ba6bc77179a062337f0ccab1cf39fc45c9223cb767e8f6e9386ae802",
    "signature": "0x01aba0de0711a018dfdbffcd276419054d8f4a8a4fe4d9563b9ee653cb0c368c0a679b5f10a2d3179b414922364a1c927be83486a0fbc64d44ba46d8bf9418a21c",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}