{
  "manageEntity": {
    "action": "Save",
    "entityId": "313635960",
    "entityType": "Track",
    "nonce": "0x95248da8d7da49ba83cdafc88a7f355c7401d383575cc93e03675ed36596ac85",
    "signature": "0x2b5700ccca1df28ea844600213aaf48d216413163180b7939f7fd7b0af78593272ae75780f1f572d2fb011674e0756e3f6456dfe538728cb94d2e212b757a3a81c",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}