{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xda4c02a03c18a066de99784bb825a51c801751f85a6cfd4467d22c16bf20739d",
    "signature": "0xcaf6469e7184adda60cea881093252e50aedeaa7239993855ee81f4502e2a6e660ccb090138e1396651df533eda0d76dc59c8ebc4bc0b2cf40de3293e5e1744c1b",
    "signer": "0xc00161Ff559cB64817b9221Eb9904a54cC9Cc27F",
    "userId": "226897135"
  }
}