{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709818",
    "entityType": "User",
    "nonce": "0x12443cc6171ad269b894d3004f4bb00adbabb4a82892135bef8c7ef8a3d7f1f6",
    "signature": "0xa20faf1c8559595fc78613eff7c8923cbe6c0d1ea30cbd273a268a22350c8b667c7d2e15b4e507bede5f139b533b96e6f90f97304493069d85871c66ae5268491b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}