{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x519b3d160b8fd94abccff14e7fe7ad2b10b025947f4d18194e62e1b04ecd5593",
    "signature": "0xf015aafcde323104a264b371ef008bc982bcaee32181ddaf739fa179b12f375576a456d18bafb512bc7927a967610c06e317d77138638a081a9b449ba398744e1b",
    "signer": "0xf0FB6Ee8Ad56eA2e147d118ecaa4eB46cf03b448",
    "userId": "831640099"
  }
}