{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375501",
    "entityType": "User",
    "nonce": "0xaee2daae5e87ed58a7ea1bfcc92e3172030a3700e8a470293f6c65dcde11966f",
    "signature": "0xd6608fca332d48f5080069fc3242440f15d93190bb6e88274c8a3a1d3748aed234e3ffba7fe139ba053d4bfabd8897c4fcc1c92f6b02cbd14a18a4fd79747a0a1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}