{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0x3ef2b3d31f452b27b1cd379279b8fb09787649d91788354830baa4f9410ad147",
    "signature": "0xef3199c7750edbe7bdadda037734013b339fe27b8ae874808d95411e024997574a48231bdbed5b55d4b224a56c9da7ff961f4667e5bfeb82f607758572e032a01c",
    "signer": "0xc876F505cb8a680D38792C141903C53780bc3901",
    "userId": "384345140"
  }
}