{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x57c7bc34752a8c122f91183da546af849e0c20b4c154e31125b4ca2cc9cb5e60",
    "signature": "0xa9eda34197b74dfa7ef9eb7a928e505b516cab3d29fc2ebfd6e3317d5b7c9650576d2aede40a43ccb3c8105f828f48c935017f6ffffcf7e3691948e766e8541c1c",
    "signer": "0x5D6aA75D1AF97D85776B61F02b335AEe91Cc2F5f",
    "userId": "284052510"
  }
}