{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5ab2e98f254cb1616da8cb344dcc2497ce12ef678ad61c9380adb6e457d13a89",
    "signature": "0x814b5aac08eeda5e6b9ec8ff7f179310eebc4ecda21b97a9966204106079ea98445f4f3c3945b2d261eca8619365c39d75b5c6fd6cb20a63dd90f4e99c4b7edc1b",
    "signer": "0x452d8771039b3327310fb7c8F867d99b5765b6D1",
    "userId": "358068750"
  }
}