{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "901870302",
    "entityType": "User",
    "nonce": "0x6242bd3dbf262515cc3b9368244a2597603245f07e20eb8ec5529faff9c20491",
    "signature": "0xe45a76ef8b094e5970a0d678f5ccf4ec245e558fbebe900e9ac288d0d8f245905013aa323b9238bf35ee6c7da37a3983c88af153a583854ff3cb61570ec656b41c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}