{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x11587a0ba422401561f0e90c10c8f4efb959fb225dbd0ab1cba47212a5544ed8",
    "signature": "0xb4aac4b9ced2cf9a9b9d2447eccc97e6a4c55517d1a4880262ad8ebd34de293e1d14ed758eb8d16e58e7be7dee58315a64e15b6d8ae2f123d78497253b60a0461c",
    "signer": "0xfd6fA08caFa73194F0ebBb3f60d6B15657185a30",
    "userId": "745940006"
  }
}