{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe77e1cd35c11bd90e938065b4c7dcc3aeb0e3f3600aa7ef4a002c74bb21ae377",
    "signature": "0xf892f54438bf13039d095fab5bfa60650ec295197d78f20780131bbc966092bc7600f48c7e53f617789ddccb55eebfe8f84026e4aee57f7311a1febac75b4e321c",
    "signer": "0x4911fc6eE12AADfC1Ee7719788e2521Ddc441F33",
    "userId": "388928281"
  }
}