{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "680391",
    "entityType": "User",
    "nonce": "0x766c71502cb067ce61cb2fa0d7ae42bc8fcfdea0bbfed36f26a1aaf2b8884c68",
    "signature": "0x4fe1eb21ca083795e9732bf2fffb09708dd2d19fcf3152219604342e91b76040779775231f4305c4a097b3239fde0cc46ee0c93d30cc5ca6e8a08d0e8c4f74921b",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}