{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfd0f5792e7c260422e993d60a848b44a153e95dce7b76c9a9c762ede570f7f54",
    "signature": "0x323e4e80ee28aad1b1e9f4ef3789a2b41f08bbe82b52136724bc70c33f5f3478789e977e960345b1e036ccca970507ffe39ba5e987a556c25bc990de74ad86ef1c",
    "signer": "0x77c311fFe4ddCfFEFc638434709Af9aD1cA69870",
    "userId": "788669747"
  }
}