{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a7a0f2ea4e4bb9fe4c18e9ced9b40a9b8608127bd51c11a3cfa2f906ad4d723",
    "signature": "0xf7b2aa30d0e0890752c95b7810ab720a42aa0ea413656b9ccdffce45815141b36114f2e94ea4bc70aad9f820f5232a701a6a28381c2cc13af7da07d4687f1ddc1c",
    "signer": "0x3D8ccd09c9F5D4f6D75375cFe66c924ED2B6CA52",
    "userId": "136358317"
  }
}