{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "977815577",
    "entityType": "User",
    "nonce": "0x3ac83dcaf928ac140ca84bd563b6eff89c47fe52ea1c433977ea273579e4ca69",
    "signature": "0x22fae53f977b9944dd7b9ba42a59b1da1908142b8bf8a427e5135c600ee66e3a216d5fc1d831aa6b97ad2e1f9d2a5ee1eb42f5a4dc7498b545571f8918641a211b",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}