{
  "manageEntity": {
    "action": "Save",
    "entityId": "1706766045",
    "entityType": "Track",
    "nonce": "0x1295a767f4766b7d513d4b0d5187de422833b07398f9694939f83c91bbe5d025",
    "signature": "0x8334d9785a7af4fc88b6be1d71b26ba8f4fc6cc445914d4cb414e8e84286770478992d926e3956268e0fbe25105be8f26e4fecd64047aa329687a822f0b0e5c91b",
    "signer": "0xAaC77705f5f6bd787D8581c36Ddaf7c0c7AE3370",
    "userId": "827420993"
  }
}