{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf8f364be89fa6df2a762501ad94cb066a02e2abd7993fb0c6d37263f15acdf86",
    "signature": "0x8ad617e34f0374ab02adb90af953f9a0b3aa1ebcda54eb16105b13a7015736cb4de0c538135a60a3da1334a44c66d91577a9f67423f20508b2c0f2b2a877a4e61c",
    "signer": "0x375A5c8e2177Dd23db2b9E3D32B93F91AE5eE5df",
    "userId": "967397462"
  }
}