{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "613326373",
    "entityType": "User",
    "nonce": "0x28734a7f88b7f41200d540095439899a86f0cc858c3fbc7e86c8cb2cc298d656",
    "signature": "0x2a43ff3f01fc9931e5e1478b863db24f21290a74ace79f8a1897d24ca02298243f8d087c5b38e600922d0a22e79da82ba9bbf13a1f45050534aa4097beca1b491b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}