{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x55077ed27f716cb437739a791e780faa7848889b6a53287112955d05508041fd",
    "signature": "0xe21a2d6af499ce4d794cfd5521cd08caac358c82d225b94c0e0b7f11a6e5b6887d85a150db9f019412db1884cb53f21d7e564a14e95274207b9c404a8159df991c",
    "signer": "0x9A1A483b8f4450Bf43992f98248c0567cFE557B9",
    "userId": "126704903"
  }
}