{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "579236498",
    "entityType": "User",
    "nonce": "0x837a87207799adfa6819b779fa891409d7295657279f399480b3e4abdfdfc455",
    "signature": "0x9fbf496c63627e136801eb25f6f155baf805ff3511deb530c715b4441a7461a87f711aac1859587910f637ba200c872c4163391e95b3d0d4ddc638d590ea3f221c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}