{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540022120",
    "entityType": "User",
    "nonce": "0xfd35e6a3e9706749fff338dc524d577f113245acb6956e1801e5ce059e129612",
    "signature": "0xfe16d020e40daf4d4779a3eb6a40e5754f873a9990b95ebf26b0af0751adb3021661a20435cfbe5361ebb3039845402431fbadb080fff02bae613c96a36ef0b41b",
    "signer": "0xF978BADb562Da025f06a1182ce14a17F541Bce57",
    "userId": "486159454"
  }
}