{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328810",
    "entityType": "User",
    "nonce": "0x441b3f2fb02cd7c1752d62ce64b653d0860997c669c7ebe983e9c41c9005e373",
    "signature": "0x2d3a033454094639f105c7e372f38a689a09c8c4aa59dc5b4255a77c942d4ae45ba6a2bf3a07e61efbffecfc81d330e3c359b4899a6542ff6e94fe4bac10931c1c",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}