{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6b21b194ddf1af8bb72dd04f4e1dfe0b42112ffa56f01ca6842895058b0bdca6",
    "signature": "0xb710b51bcd6b52263a39eec9269f42235598052d5447ab43efe373e161a9e8583c4791275fca1e395cfc95813a06fca26ff73c602abb33ede4c49dbcae11ffd61c",
    "signer": "0x16673cB88841366727f4827ecf48a720c8323085",
    "userId": "721569387"
  }
}