{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "447",
    "entityType": "User",
    "nonce": "0x19c8d72a43a3d360fac7dfb2960028724b77cfc934743bd487f5127e4ddde4bf",
    "signature": "0xb6b83ccbc45b7cce867fd290d68eb51defd2c6ee230fdad30a6269accd35fb7257039650810ab3d96b15e09f934465b2aef49bbb5bf4f48a6098b7bbcd4c68671c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}