{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe68750251bef78e9a812f3fe68ecc0287593fa7666f0a6480c1d306cdcacb52d",
    "signature": "0x1e5e0fa46811f749377a6153acb88fc911c513ceae9d356a90076ab5eb2e91f4234e1c713427282b08c65bb0b9a7507593e2ee645c5566fb0382ce24a2d94cc21c",
    "signer": "0x140f7DD4B61B1fdeb532936A8a73C5cFaD2c3c4B",
    "userId": "636553111"
  }
}