{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "597677270",
    "entityType": "User",
    "nonce": "0x7cbe231ba45b174baf84be2ee314117f7d737b7d0a3d18d6132eeed4f53542bd",
    "signature": "0x5b1064bd65debc9f6216b754ff310f876881b365a1bb2bfde7be086619529e960b14f2546050ebe8d42fc7db260f04db8e4b509ebe00d3ed447e0f3cec4b026c1c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}