{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "334081624",
    "entityType": "User",
    "nonce": "0x905835f8d21bf10ae87247763c81edf7064070fc5f03317bddd05eb310a14cdd",
    "signature": "0x7b697cc0676d7d76679174bd785c4e7abe4d9b9c7157874bdbb3fefda5a272321abceb16bfa476aa0c84c5dc5373d8e9421a37972049b745b5d7f262eb6f6f3f1c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}