{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6598d72ffda0f0ab3fd39a3fe97b1003337762563d87a7cd2e49a4730132179",
    "signature": "0xf31cc18e40c0359268bed1c3826170c75a6c6e37618036b25eec8f483772248d2144b58258fd75b49667c6ec3e6f9ab33425ce4da24ab4b14f018893f0abbe441c",
    "signer": "0x9731c27a228046e65489b08a1C3f1A64f7093B55",
    "userId": "848409996"
  }
}