{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe704a5f4c5e3dc31a0a31da02238028d3ac18198bdc1bcc965fd343cb534d1ec",
    "signature": "0x346b8826f1b87f841a69d64545d3ad7efc58192ba2fbb69aa894556f4b3302811afdf389f5523852ed11bd980b5bf4a8b954837ef237cb2a603788d062671ca51b",
    "signer": "0x28bFf1Fd30814d76B1D502B7Fb038a92E17aaE50",
    "userId": "819448182"
  }
}