{
  "manageEntity": {
    "action": "Save",
    "entityId": "1111484",
    "entityType": "Track",
    "nonce": "0x4ad2439f7f9a7c8ae10f4b3aa84957837b2018229fec4d2e6da024befed840fb",
    "signature": "0x2c63e3aceaddf923f2fedb0209992667d73fbb21f8437757bb32db716e968b0568008bd06a24fa26ffc8f11c6b38b789c88eeb418e5d20d2e34c3a2399f56fce1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}