{
  "manageEntity": {
    "action": "Save",
    "entityId": "762207",
    "entityType": "Track",
    "nonce": "0x51434ca227b0766f228dec313d72ea79cdee345d7377f629a34c163638e7953f",
    "signature": "0x05b14b6eaf49b609af41bca30aca4e7cb17acdae0af722b3849d454b402f32c17e0bf973af6e09b8b7c0843dabd78541a2cb02f6214fd723a2a74df7cebd70ed1b",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}