{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342325340",
    "entityType": "User",
    "nonce": "0x7d795202330b7c67efe35a6c51ddb6339afcd014811777111981993f6207cc56",
    "signature": "0x1b65647aae7e353ee2f6c1430b476c8897bde9828f501790462e8f4fcb2dbcf87a5076e092094320e1be77327b5c272c55d4d03ea91e35053cd1a50c7dfa70bb1b",
    "signer": "0xb3ec8D53b350D3Fae74A06a6023Fa66171B67E2c",
    "userId": "695620563"
  }
}