{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290536219",
    "entityType": "User",
    "nonce": "0xa3724d105a4e703fe182b3771b3324e533d468bc24a40153bbe78101511a2c4f",
    "signature": "0x0b99144a01211264905ac8e81071e7c2614a5f9cf6acefb87e89a58e9f5a336f1795d1e7aaea6d694cc60669b91fff4f334c4d4a28dfcf0fd38491199aab91bb1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}