{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2559",
    "entityType": "User",
    "nonce": "0x83332fa5a7deeea7cefbf18a9d3cf046fb837ee3a7d0dc87ebc42c2655e88c40",
    "signature": "0xebd44f48f0d9b55ecae5a7f2c7c75fec7f3d5d095656700cf9a82ca2dc3fecb0175e0da1d0ef1b2d75e13ca43f0bbe089c2ff41e4503134aa0180ad710cdb6e51b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}