{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "700828",
    "entityType": "User",
    "nonce": "0x4eaf2b446d0b2aecb9a4471b8839cb56e6ab2ff2e86c8b0070556a94c5cfebbe",
    "signature": "0x01955fe222169a710b6789c0d5689f488213ea61a933f945287e83b60dcb0e315d81b567fb436f03d1a9b5f8d54d5581a915887cac49a56e0b0ebe4fd11cd5811c",
    "signer": "0x646BEca96ab04bFb6DD725EEBc0383e1Ef13deeE",
    "userId": "588448440"
  }
}