{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "964257878",
    "entityType": "User",
    "nonce": "0x077477dade6fc2c093241250d39b3f035af443cb0aa3d46782bb07a8095240fb",
    "signature": "0xb8f515dcbd922fc7e21def9836ec6491ddeda8c5b2ba424da9ab1eebfad46937317919debc6f09f1879b612b8676ef0d4614d5a553ef5bcb48d8f787006456491c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}