{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13671",
    "entityType": "User",
    "nonce": "0x54caf7b2a17870ce5ec090828979fa2c72a9f21b5aa105cc968abc126b2c845a",
    "signature": "0x81c51376e0ae0d209bf585a2abde536704fcbb8b3c6b2425a8aa0b2301cfbb366571efd2e35090fb54b71ea9c286c4ee02e64fb12b7642a73b68b6d5ae544f8e1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}