{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4991",
    "entityType": "User",
    "nonce": "0x75bf2dfeeda96b1d3c63ef4dc7b1b71a94bef457d8706dfc77aea6557294fd9f",
    "signature": "0x5e49d2527ed3216fcfee993ef809747ccc9f053dee80f1442cee213b8f43cd165475aa49c5b7f000971e004aa35b7af0aef2baa6a551945c70a6ebc6cf0f583a1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}