{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "756544",
    "entityType": "User",
    "nonce": "0xab4dc2c9c403b5cad4c85bba0e49a62c1fbdbf4cd46cbbd07d98fa090020c6f6",
    "signature": "0x8d4a9a4ece6adb7107419c89f95d1f728f76ca812f4c4e050a9306b52f70c5141d8786945a60c4c030c9b603b55264a61d23599b21729fab2da031e4e58a13d01b",
    "signer": "0xEAE1c756dB1BE2AA6bFD12b24Ec5E1a5dFce3CE1",
    "userId": "324670697"
  }
}