{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777418",
    "entityType": "User",
    "nonce": "0x14c038c90b38be5d1c1df248b210cf782517bbb626d84d59118f04b50957b668",
    "signature": "0x57a19407a89ed2b817d44a34848892eebabf282b674ac4dda3246b6bc41ad2a863c2871accf8eca2d933fe013d08790cb2f4d568c670dfd5fa65dda0fcda9c1a1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}