{
  "manageEntity": {
    "action": "Save",
    "entityId": "1678225037",
    "entityType": "Track",
    "nonce": "0x072dcd1ac92ad8a9ac43f2874154c890aa66d3905ddf57b8c81e40161bcc5f09",
    "signature": "0xad40ab447b2334ebd4b9de8e76199e59812e3702938b130b0a93521b0941a17d710c0ef3d34face8c0565341062916507f76d5fc1bd865b2751ae8bfca30bb9a1c",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}