{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6042d9023bd29e8778d63ce9f602b1f95a4212d23e9478c797662415d7a616e4",
    "signature": "0xc40951d58b34297f6725852d99df2589a61119713dc398c33b74d7a8835ff2ce0bc2e754144146eeec4c001c83ad357d760ab28c09334d95cf4ef95155f3b3d01c",
    "signer": "0xbb3b8C270080b0DAE42411345FCDc6a00369e247",
    "userId": "690093689"
  }
}