{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0x7402d91d2bfb2c9818ae8f48cb1bbb6d5bead84fcb21e67022e731c938dbc183",
    "signature": "0xe9121540c545d306dd3499e06dd6ba435d3926944306efd96ec8a4d98ffc65db7db878b824134a1e918ef9d711dc459649b2bf6b1c023e411e0e8c1a5593ee261b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}