{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeb08ecf692ffec17fe00e5151cc708bcae8220f4c40319142a2af51ca4537aa4",
    "signature": "0x556a58a860a1d7c0e4b7e48b05f59a2443013005b351dd61b8f4460e44f203e3001ed8f9cc0445c22662edcdf70a825c803c275f8236e1112b923c720e8f50081c",
    "signer": "0x03Dd69dd20ba5dc4fDF1ed0498D3847c31e64CA3",
    "userId": "685833877"
  }
}