{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124107",
    "entityType": "User",
    "nonce": "0x4926c247db002b171467f6906d748cdc742159a7c88d4263b93abd8b4983535e",
    "signature": "0xfab1c11b3f0a5a84e1b0146dde8e8761f80691e6925db8a73ad44b7dfeec0fc4237504491a32a1b46eb5e0da3621f6b46978ebae6edd484f725df55f2276fda51c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}