{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "128549",
    "entityType": "User",
    "nonce": "0x9351aad4115b1ebd09d3a466848c514d93c1aa0cf13eed9a7e531d3d2e875d83",
    "signature": "0x2d61aa8574df3a100fbf4439d693719920f761538a2ec7c7342214578beb1e6b75921044f96886956b5bb3c4bc0e805d0a53e73198047bf4c14112b1e2dfeb7d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}