{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571586821",
    "entityType": "User",
    "nonce": "0x2cfbe6993c65645506114ba7f6367ef59555e4cc23ef6a90be7d66c981beefbe",
    "signature": "0x5f3a079e85ca78e6d9e06ee234fc5a666720e8a0c11fd0c355336ee80349335b6f2f8a5d8ce049b8ae15a60ebafd320f1ee7cc542e1042605070ab51fe881faf1c",
    "signer": "0xe27012eAA9D36ad85dB88Fd0D42D0b5db3Ab31A2",
    "userId": "318322201"
  }
}