{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "245543035",
    "entityType": "User",
    "nonce": "0xb009a003ad6c889080c9a8c631f2f159541f7c6a78d24d03a35485f44c6c6435",
    "signature": "0xefefdaa1877d800a452387e299bc28d516731485cbf2bc9e2901b99fd1a9667570aa039071c6bf9e5529927ba2c8eacc1b26460b091da318100f72e60f1a03291b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}