{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0xc3a7cdaa10f5e227ad029c259033d2867aa2db0bc54a8380f1da00b89b47b841",
    "signature": "0x14b81289864d7a5d938efd7f1020fff53b50f148b7c2aa01d58fdad8c2434e3060afb6c4f11a11e57296795641c396b5c2b3fb8735a0536fabf34b05a0ea840c1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}