{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x28527d9842c55f288031ce5843ad7d4c0c1bc74a0b042dc1694a88483600fb46",
    "signature": "0x7b4fc585a9764a653a2d8c576a07df063b9ee6ae2bbc87f4f66ef487a28609f511b015780dba2208e9fe7377883ac9c6de8bc5b60c2165fe69ebfb193af788cf1c",
    "signer": "0xc6396936f2e501f73513B9941c957f44B5c9C0d9",
    "userId": "958565869"
  }
}