{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfe338446623202d4c9f990258f9b9bec4d837bb0591b764aac5bdba5208e66b6",
    "signature": "0xff4b3132487e04e05f1e08030c91e548a27d003f737e5d7d9eeec97f4d26b2b31b7c950928be84db85b363c98e1c6abd482a3ca5089b92bc294d4a00719648311b",
    "signer": "0xCA7664B3985afC0197EA4AF85224A1C91364dBEc",
    "userId": "356524192"
  }
}