{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1633",
    "entityType": "User",
    "nonce": "0xed538cfe5ab6d3369b60d6b0d72d8fc8ce96db8be9ff0e574ec5a9e070710398",
    "signature": "0x52a82527d29ea0e2c99a987d6fb8cbbe98c7d67b450c082b3da5663f0b97f5262d39145f7bf9a1377ed3385eeb7216257b741422b91f442ed37b72754bd8955a1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}