{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x896b27192016a65bbb31f05dd3e1f2f2c592d78aa6eca7725dbebe4e95a8b315",
    "signature": "0x9f3da84d5c3291e8f8e28d5ffe2d31246603875c5cda351eec23c4c94bc0105e3f943144989b4af45836f556db5fddb9cabfc26546085e0b36851ff7078ed1e01c",
    "signer": "0x7a991F28f8c946030bE26Eb8408414771247985d",
    "userId": "514559071"
  }
}