{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "215249",
    "entityType": "User",
    "nonce": "0x6c188bc0f1a20cc23bb6ba3c095350c1a6f3175318c43f3750aa4b68f95fb7cb",
    "signature": "0xb359aa4b85a5170a41d4ba1af54896d8fee573f35c7ad26085c0a6d0313103fd31b47793be37f1d53d973a0b40e740a0d61147460775795977727ee017f8c75d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}