{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7896d0c8ccf55f99ec779cf2d12a67ab82eec692ea285c86c394e5089bd3ccf",
    "signature": "0x7b577cee6f1629930a1010d97a43a1bedc91d0d96b24e5410a33f16655bb83e33637616a8e235bc20f00c2d7a7c4cb53e1acd5ebcb0f681699f8f0c777259ccf1b",
    "signer": "0x4aA57285e5FEd4Ca36a6858d774b4d17b3694adB",
    "userId": "351593101"
  }
}