{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "350320",
    "entityType": "User",
    "nonce": "0xa2c50b59255a95c3cd1395718666d3b9c489ef500c0d1825fea5444438f2d2e9",
    "signature": "0xb2e48a33ddf2c6c3bbe9b338e0f55a86a4223d4c3b9b1fdbbb08017b6261a0ea5507bfcfe4e522809f3bc01a07b8b7000b5225076c5cf3039826148ba028a1a31c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}