{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7aef56426f874990d46daa4f152b06d94ac9a0df0cfd7b10ff46c4e72d6ad8fb",
    "signature": "0x4460fc4d6e0685259a3595bb2e2a724d687b1196d9892972d4e038abd8f61fee3b92327582d9c8da0b3b0cc00acc2d917524db6739d0909eba538d1fd2011ffc1c",
    "signer": "0x9D8826fD99d7F16F2FE1cbE76Dd7890750ec730A",
    "userId": "151555504"
  }
}