{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "535741680",
    "entityType": "User",
    "nonce": "0x573cc7741dacc972bba787a0d4423e1ebbae886d22fe274c4cec7a47a40b211b",
    "signature": "0x0f7e2103350381c5d165b8ffa39222717544186dbaeca9c144e941c947deefab585819910c6442b1fc5cfbe986450cabc5a5eaa7c05250b506ca6573dbead1fd1c",
    "signer": "0x75387BeED3d3B040a54C3e303fF0B07Da67a9186",
    "userId": "223536026"
  }
}