{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9c6846715bc4ee6005f389cccfc6b2c2d27ced6b98f086721a5269df4aad401",
    "signature": "0x8316978ed6baa92c8d7e6675b16e85025cf830efbb50f8bcc61b32e29106eb71757ca0cafef82cd445ae44fa566c868d7c9b8ac85eba400cfbb78bfa1c32f37b1c",
    "signer": "0xc40850178B74672DD809330aE4477a7Dc40Cda7B",
    "userId": "93814449"
  }
}