{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xa4d05c21e1c90daf16f634e3ae1469c184956ba7ed142b8d5087f7d224e7d688",
    "signature": "0xc93803ba3d9b5fbb77c288ecd05187117dd7ff1f23f07a06b90ce07643628aff3beddd629a0fd42a6f0c862a289c11f129eaff581052b17ffbca2cd58c89be421c",
    "signer": "0x1b3E9Ea15dF71Ced48bA8E493c9BBBcBFa25823a",
    "userId": "913385866"
  }
}