{
  "manageEntity": {
    "action": "Save",
    "entityId": "1613494247",
    "entityType": "Track",
    "nonce": "0x3e4f76e2db05aa2f32ec0570162aaaa31b9df3c7351e359a9b5a23038c5e765c",
    "signature": "0xcd9dfbc175b5f6a245387a242ab9218a65500f73575bc08da1dcbece1d0406740a1a535070fab0105ab5943966624183259093bdd1332968271ce9fb54cec8841b",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}