{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838777725",
    "entityType": "User",
    "nonce": "0xd5d061332e5413067efb7af6f048ec2d0e3f555a442398104d7e4d2a0bbbd922",
    "signature": "0xa918c04d2d5784d8752c2748eef5c521e4e98290fc6c36fd373755264776c8f7102031f6b698ee60da0dd96b0641edaf6f702247fb8337cc534fb2b1b132a4601c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}