{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x742ee6f8dd3058be70f3e83ad8e57de06c85ce4b3575f1fb6f8646a4963c5ff7",
    "signature": "0x20133c6ef5d52099b598341ea7330c57dc1a6bb3f4a7378bfd2d344ad5db9de40694d99c82b172058df2fbab1ce877dd9041f900aeff14e82dd897fab90db3041b",
    "signer": "0x131507412Bf29bf56DB3c7034E85e86AeCBA66C9",
    "userId": "859218009"
  }
}