{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44577",
    "entityType": "User",
    "nonce": "0x2a66fcaa0d15227fc1948649ad4234ccc590e95798e9f9924f0b48b4c7562ac5",
    "signature": "0x9a7bc9c6d57dcb79f8c3bb0c2c251fc8b621495ceead869fd354408e0ce7b33d4c3362741dfe64df9798369b709d3288cd44b31a7c8c7ebc5b81ab6f02f4b2c31b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}