{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "721084704",
    "entityType": "User",
    "nonce": "0x5ee0f725e148a344cffd5af15204ebf1361e31ce5accbca6a1190b2f040069a9",
    "signature": "0xf91cd954d1e7c8da316d8bb080237c85096870e9c876fd0deb5b57ddc49b54d15bc34297e719c64f0207d2ecd7f1d42160fb9c6d8409c60d30bb75b024762b411b",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}