{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844910",
    "entityType": "User",
    "nonce": "0x71fdba480cb2d064bc1b7bc4c80797756633d2454e565e7e4388542ec0828c63",
    "signature": "0x0d3c0a1f2edc832c8c36911b2eeb96fc53e212e00ac18f63d778e21484d81c6174fb624bd785c6fbcbc99656b885c6ddd9f5be8b9c1d14c7f36f1019267cf54c1b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}