{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "872142418",
    "entityType": "User",
    "nonce": "0x6ec2d9a565226650079dc1d10b54d94d073465e3b35a67ad2cfb6e05403e2ffe",
    "signature": "0xc1dab43c53c5980bd6219b16dc72d1ddd0c4f11fa1ac32b26cd74f9827964689314464fe9694f3f9c555f74ddb3acc091b02ee99600aa2fc1a97ef880fee7b391c",
    "signer": "0x3B72fa667D52755CcB53B3815f3be52AD038A577",
    "userId": "211024156"
  }
}