{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "148654",
    "entityType": "User",
    "nonce": "0x2c412127e7b30285fe4ec0e7582c506f0778640e463a13863e6e67ea8f1be410",
    "signature": "0x79b59d8db57e52ab3c7257c49f60fb492eff4c10ce90caf05f818cf27c00d4252798250442f1f74626e142f66ceea758df893135cff399cb55384627cdc4a6b11c",
    "signer": "0xC57e1cBf8414af8d043075F299b2f13C3DaA1Cbc",
    "userId": "869267771"
  }
}