{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x50e8c070920fce3e1a51a1777ceeffe10f591647d820fc30c781429159e5e55c",
    "signature": "0x5d0a4980e04fdf5fc3f37e605e09b5b265a5fbbe5a99e04acbbb081c7c88bc5a1baaf9569fed8c332ff4c94ae9135616f15f7742288be1ed2e9f0588eac64ce41b",
    "signer": "0x9F7519969A71D30Ed24Bea026b7BeC67b08bF305",
    "userId": "63872857"
  }
}