{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "689026715",
    "entityType": "User",
    "nonce": "0xc0069fd699a99049ae597c52f41705b4f12ebe61a3484e640af6bf988450c331",
    "signature": "0x76329ef347956cbcabf822b428f9df9d24a45475aae7b42b29a1135e7abd0ba96aad971a82125837dc6b3d31db3215bcd93cb46cf0e552face8941b229aa26df1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}