{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x4d4cabb35519e242a90fd66314a65283b5e149dfee87abe8495c464dfbe4b7a0",
    "signature": "0x46effddc6c4333339d866e2045d4853453d9bc737427b3e5b13a2b91c0a4e33c3d4c173261fcd92f3a6997c3113a6548d7792aa25092ca92ba8aabc9628c44661c",
    "signer": "0x14FF2Ce3bf23AEeC9C140996251F6f85D8e99431",
    "userId": "53273933"
  }
}