{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "141535",
    "entityType": "User",
    "nonce": "0x71dac9bdf7f0518de4eabd79a00fb1a50940268f423c8e4e4b5cbe9cf3b8eaf9",
    "signature": "0xff2e650d206c0461ef7aa8ba500ee17635cc1229a5d24adc5fb57e03d76106f84baae73c76598e267265dd67991c2c78542636afd8e7c1eedbfe4c80229a11df1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}