{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb1f654477254954605402288e26002be471b911ebf72161525977f2dccd5cbba",
    "signature": "0xc1a09d11454c0d5a6fc3388388a8f22739264e91300b88777c3cf6a8612593b14bdec252dadff265f85ecc890a0d1b30a15ff3d99b7c5cf63cd3200e36cbdf941b",
    "signer": "0x81bae5FC31dfbEBFeDddCEa1Bf962864178Df04a",
    "userId": "111225568"
  }
}