{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "573790218",
    "entityType": "User",
    "nonce": "0xe29218eeaa562d34fab4f406a5b101d73a4614ab5e37e31f8ee6de571900c7f9",
    "signature": "0x8bfb5519d4ddcd0d36e73dd645cc315c0d0c5a544a4a7a581b96e81f13cc1d321047d30966d29b4b2a026e298b30da6ba204dc17cc815abbd68c3d92ac84b77c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}