{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309588",
    "entityType": "User",
    "nonce": "0x86c982045611afb341643130819e3a352e1bd31ba1e77a93e4255055e834a310",
    "signature": "0x804fcd275907237e36ff6a9a208eeee18db0187fe0f6a1a6e6ca9e8becd992ec7747a80a99e09e7d4b38ba999d9dd530a37f5bc2c82910130f2e81265b8e5b771b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}