{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x69990c108355df74c5a3ee76989847409155b6ab0299b0934b7c81a4326e850e",
    "signature": "0xc50c685dfcda77e1cb94be4f39f066729f43cae220345aa639ea6d01a7e331e334822b3e28edb2bb67270fa6f8169774b3cb15dbda5ace0826c5bfc975789e121c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}