{
  "manageEntity": {
    "action": "Save",
    "entityId": "1092263522",
    "entityType": "Track",
    "nonce": "0x894319414dd5e08cd9b93a2af1b96f62b63ede5d6b83376b842826e4725a5254",
    "signature": "0x37c88136dc5cc127c8be75edf8a0dc357944e801c17885376e423c80f75099c86339a6425a25dc2edd07c085e4dc178d98642401e3b2817edef2c96d11a66ed61b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}