{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545276377",
    "entityType": "User",
    "nonce": "0x97e3738666ed4b14e586292001f35b6588373a15096c27c4b809ed2d7d32fcda",
    "signature": "0xb990319bbf3e77a3f5523bb869b9f17efb81b3c27369b8710822a8a3e658423b248cc5a4ce88641ce57ee669954de3a80e3c2ebdc412c940be8003b9c9064a331b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}