{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1721016",
    "entityType": "User",
    "nonce": "0x8e4babc1083761eacbe146f12e127a60d3f81faf515572abb7f62fd8f6d4f56e",
    "signature": "0xdd0774abf8c8e0cb2d3257c9dd8b1c2c900e3aafeaabb50550a83357decbe68b484b62ec92d8df09510a7c7f4b24a079805eab59e94da32b45767d639658d71c1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}