{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xabbfadf342c1fd4e20d6543e64ffdcb30152956c9cfebf2ab11e63c62234b251",
    "signature": "0x6a0752cedff1a8d4f49fae2e9eb508ed0358569e249d67e054171a4f90b0bbf7651249c63a3802ca3b2e93354705d3f2f8934ee9096d240c4407113aba9e05861c",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}