{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x31e051d024b69b8cf6a9fda335cb98010d0f0c7d3b879bd4d84d43de0e858185",
    "signature": "0xb7ac1546ebd73142a7641e8a42272d989f84e74d8a56b3c306ea6a28900c77b271078f3ecc19e789d7a4ee610472d7a0d2c5e6cc76fa155a57f852d91fa4ab6f1c",
    "signer": "0x5E652dd502316FBC7C662d41A84F46564e7BFeFD",
    "userId": "52749534"
  }
}