{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75148",
    "entityType": "User",
    "nonce": "0xaadc765105ae7b64efe14176bc4868faf83354df2492a1016864ddd30701bbbe",
    "signature": "0xab1015acbd9f8031e8003461ba53bd953e985a2cb1ce37825cd080c3cf04b81107931ac05b200be76274bd46c78070526a0d798ba2cde6ff836b7d8e807460601b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}