{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4510",
    "entityType": "User",
    "nonce": "0xc839fa9967e4a51a9ad82b95eb3e58a85cc48f5e5cb81c111ceb965ab581c27c",
    "signature": "0xaac559feb8fd16fce844ce9006ed4a626db551eaf87b3520709b13a3de29dc6e0cc530ee220e6b4af50624ea1730e6750b3366be5ccea0f70e6461bb6e7b9bf81c",
    "signer": "0x60B9057eF652D103BD7D66F68F81078E7DE68Dab",
    "userId": "710138589"
  }
}