{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0xc30b07316721ff44cb72f9e4a52dc5c626dfe44b9242879834cc0a553d5efb8f",
    "signature": "0xae1c9bdeeb7eb448ad0266a70b54eeb5a90475c6311e7db5b1ff788a8b3d30417fc87e6126fbef26998f2b2472323a3c8f31c5abb4cb27f4490298166cb680661b",
    "signer": "0xaB90b80e01A874dbd9B356083A2a389999dB06F8",
    "userId": "883066600"
  }
}