{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "642005424",
    "entityType": "User",
    "nonce": "0xc337273ce1ad32ca67f33d3cbb21dd1a2d4863def9e1a62e790ebbe6ec35f3f6",
    "signature": "0xb7822ed7f3018a7807baf34ef9752a54d77a7efa09ce09f42ef8e959c5c4f7cc59da893d8c9d943fb49a0d40630612f3826ee7e492117189bd6f0baf232d323a1b",
    "signer": "0x2E3d52B1402C716b32Bed03725756c3e8Be58636",
    "userId": "581962190"
  }
}