{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8389",
    "entityType": "User",
    "nonce": "0x4439db5acf8b3a28e1d99edcb9e404728d210f0f646dc8cc4e007bd57b7fadb9",
    "signature": "0xae903927b5e3dba07cb8c602cdad9cabd42464b838b04a20377fa25bfe5a1e2770e6f73e17f3d39bd13bf532742689ed6af6ddf32e205efabd7d749d2b53aade1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}