{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "745",
    "entityType": "User",
    "nonce": "0x2805af4b60c41c5b99fcaeef3380bb8f724a4dad319b1dd06d14b0bdeeee800d",
    "signature": "0x9a1de784d603b88a3b69cefc8fbd5f5a74c35cffbacc306ab2e90e2689da09e77cec92cc66ffbee4b05c752e86f5ae57214219374e4590446d34d755c2bd165b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}