{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0144ff863032161ecfe2a6772e803cef3051b0f17b0ca7ce251d32df7c89f99f",
    "signature": "0xf0c8c98b2f420f1ce4756c7462a8a888b17ee3885262c94b186001d65695e395631ec0246047a29693f82c0468721677d771a05d14d84add22b3fa1f34f9aaba1b",
    "signer": "0x812A96cCb2FC2BA429f669f4127ea0E48E65194F",
    "userId": "891610747"
  }
}