{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290283513",
    "entityType": "User",
    "nonce": "0x299cad9e6d3c1eab99c9adcb4553abe62d76f5f3470d27a4144d738d05e45118",
    "signature": "0x26c25f7d8198f0c4026745d4d3655be116a32af3723295fafeb770c47a75a1047c46f059fd893d1fa6bb33248c5d97a4a23e30f9a778f415bec34206bf4f890d1c",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}