{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348772",
    "entityType": "User",
    "nonce": "0x2c000f1870a7e11b9552b7978ae143c77c7005da0712b93e0df7bd0f367e7bfc",
    "signature": "0x876b8d3d7e78ed5c213719b6ecfaff1dc64bf35ae081bda7e285dd3383680d81565b6beecd7c7f0dc16a9da6d6661ff761a038726a419dfaf0c8a3d3d4f502d71c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}