{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x44cd93c03b86941ea83739c40a04c0177df902bcc0f3d9830a6a9b891af899cb",
    "signature": "0x2a90d0f6ac76088442ba7ca0e041c5ad17fb818b9861673702e87f20320924c931e987c6ba13ea63a9939507d1dd42224cfc47de16608cfc9dc4ca23fceafb7f1c",
    "signer": "0xfaC90aF9A941c5ad9B56491ed715c489697fdBF3",
    "userId": "782873500"
  }
}