{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397787",
    "entityType": "User",
    "nonce": "0xca449cd1b2b7f42dfca4c1839c62dd97d37b6ff80340287a0305a079c3e50c0a",
    "signature": "0x22c2d5225f5ce8f97ea96cf84594484e28317bcbb68de1149027dd3d21656f153f70f3efc8a7ab1aaf74674befae62b45e7d73cce2c9781acc7fcfa4f283247d1b",
    "signer": "0x3B15C1247a5CC34F846b88f0E04B262f39b05C1e",
    "userId": "563285188"
  }
}