{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1491260",
    "entityType": "User",
    "nonce": "0x837054501b3fd814b8157bb81589765dbb6e7480739ba24b39cc4fe57b4fbeca",
    "signature": "0x5c5b6568a945f7d5ce6a939e242bcf1c2e41e3cce50e304b6bb23c648467f823377c5ef43735571a8db13b8143350a23516a957288711c371e2062354cc595901c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}