{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7d0e20934e4ee4c1add4ef39114307edaf6a2502c180ac0786619b418db8320f",
    "signature": "0xf046a7e6ec3a33bd05df0f82a2659666b6f672e39d1c2aa33758f2d75681d2310c12217710a919b6d43fff0e51ec09b97185271c6c50f4848bdde4909c8622311c",
    "signer": "0xC0dDeafa7a89C5C1D93A26D3A12a7d1978A866C5",
    "userId": "729568521"
  }
}