{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9d0958b5d830b9ef090f0d22b8e50c73978fc8cf1b4ee2c8a26a19aa57f4679",
    "signature": "0xdcf3894df2f03dfc0e92dd70b59869e0f0e5503eaa774a5227768ee17103a69b603fedaef0dcf91439415c6c50c734d753d2bc636b0bac28119df5357be4d6ce1c",
    "signer": "0xDdaE2647cC370a0eae3bb93736cF68BaB9DB8378",
    "userId": "676081895"
  }
}