{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "89210",
    "entityType": "User",
    "nonce": "0x51d751309393390e5cc42976c1b1af911e46df6407cd83b59ea33bd048c2d2de",
    "signature": "0x82b0822dca12135483d764b4436614e3c3aba624fe3764f07138166a6349f02b1fa894fdb6d33b7cc336d59aa284d2f1c59d3503f4e1c663132a113fa481793e1b",
    "signer": "0xB57F94Ef9a26d73E8b35D3f37FccD18BcC7eeE00",
    "userId": "850416615"
  }
}