{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38cc15829ba55d03098f8119465f79cd3e6ea50648a97310745cdbcc8574bc41",
    "signature": "0xc6ac3eb3095db664d7fecdf45469b6ca7ddfa5c401450dea68254cd26f8c07f979fa9c71c2a961886bd47ae4503ea447f5131ad688c417c82dab49db20f695231b",
    "signer": "0x2b7EdfB2dc607dD1B490f4FCdE0843002EcD22E7",
    "userId": "737318260"
  }
}