{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b90f667084bd2c00e01163defb1943e4935dadd77a8398019fc3b979ac4bb30",
    "signature": "0x5171839bd9a830997adff4bc531bf961a98fb4b82f6fcd54e95254dfadef11ae7e1e11c7cf52f81a1395ecf6a6ddd3c5e42364b2583f2b658640d65984bacdb21c",
    "signer": "0x304d1c96E029091106AEf01B6d645042b0Ca8CB2",
    "userId": "113836377"
  }
}