{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "500045816",
    "entityType": "User",
    "nonce": "0x236e82ce5ae4ab781b571e13050b12c7d8dfa6e2da89709673f43e128137bfaf",
    "signature": "0xb7157765642c1dab20132d24a98575b38707cd91c5e20eec434b98104efb1a7e4cb08871fc5ab3fa14dd5b5af7b7f4a17fa4ac02d323a73fc31c97196764766a1b",
    "signer": "0xF6A602938bf3C2035f253F89b50e93110F9EF4d2",
    "userId": "615050311"
  }
}