{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330824499",
    "entityType": "User",
    "nonce": "0x4430c557eb1aaad4389f8c674937d18c2fdd3ebdfbd95c47237839303dfb9707",
    "signature": "0x403d4a807cd6c849a6e24705c4364f4622ba5bf788f7324654e50f453276401d08fd7816a776c532e55af753db2263eb6b44589dab509b625461d17c24953f711b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}