{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb8ae69455679abe09be27db0af3327c02dab473bb22982e9b47550de7b0c6ab8",
    "signature": "0x6ce49ade6ac70c13cb2d7c3a365df7ce08a82aa2c4c42247cfec2b4baa71a72e64368863a440924f3f6373884f3a1fd485c7a0be2ec5a3aa5b43ebf3673afb161c",
    "signer": "0x1D7E8A34bd4fc9e719CA8B20f050319336a7319A",
    "userId": "919982539"
  }
}