{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618242981",
    "entityType": "User",
    "nonce": "0xa074dc518fc13e61dcf4f7db35e54f64e360536f29cefde8cc8cc70eccfae8ac",
    "signature": "0xf8d4db3bff4bbaafe7913abc7f20897d4b380d087dd408b4f08b1d2039741f02412ca7dda18213e362b407b4c736f3e843f378483f444a0a5e0a70ed5ad4bfa91c",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}