{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152331",
    "entityType": "User",
    "nonce": "0xbea0b51158fbc43a8affd0a94cb2a89b7c58812a6429080b9549a7306e35ee42",
    "signature": "0x901a231b2f90114db9a4dcc273de1a3c86e31c3572ee6566299b5205471ec13258069cf670acfc7f0551bbe00d782c39c3237e830d2bfa07b26d925bbb9e11b21c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}