{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342366",
    "entityType": "User",
    "nonce": "0x309ed4bc8180f8aa5d4b6816e2dee78a6bd8b33a8924c155cf1f066a65f11b28",
    "signature": "0x1c7ed2bf93a6539f5e6819e0325dfcd6b002e15428db6cccee0f6cf8484128c62f145dd27a4f9395526e0cf8e39e69508bb912ef9d8a3c99d8a1ae6ed03e61c11c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}