{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601",
    "entityType": "User",
    "nonce": "0xda616674e3b2b0228aad164a4b3b4b52bd816677cbce702e7bf3d3e13bfc6b8f",
    "signature": "0xf7cbe22527275bba91de84cd212d954525060fa6a83a3e4be822d93230b07a534c9aaef6057acd42047c4ba516afc693a98ff3368071d8695975219e4bc17fe51b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}