{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x281a6d268679502029cae9cfcca300a0f3f32001251313c67f5b664850feab34",
    "signature": "0x86586de0bffa8c25f38dab68ec05911a4e7aacf82acb386beb7b6c0d6274fb896228d3947782f46c8d39442c8b003d2fdba51c69523c9db930b623eb5639e6b21c",
    "signer": "0xeC8C14C00b5BA1F2d81b4C877E3fbE12A962EcF9",
    "userId": "334597870"
  }
}