{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601939963",
    "entityType": "User",
    "nonce": "0x68a6be38ea8a1ee91be9d52285bebb849ac59d98414c8b5d191a95e6805d2dde",
    "signature": "0x66ac878edcd3bc4be13a88495eb6cbea041c189487b78df059e92d67189b5844017c388ab1f6eee1dc025dec4c2077cb267222bb56c75afd981c044dd1aa96421c",
    "signer": "0x48997477d821e30d3Fa835d1Ee7809B3253Cb100",
    "userId": "75085"
  }
}