{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xbff6cba53c7c6f7ab7406d56bfe18927a087d2efd0b749a60ec74321c67a5e60",
    "signature": "0x270e199717f32f8c2d8e595d3fa8b054b1436bdd74f0a192fe7464a7ba8da9565f8660b24bb3da3b3da11a593395d9f5d23b9772f450cd122734f9f7baa713871b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}