{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398267373",
    "entityType": "User",
    "nonce": "0x91b6b75617363e0a5c1c7663c2039995123eb976498dad8393dfdda45517061b",
    "signature": "0x033d06f60f99934d34a7e2a6ae449b3383d639549921434e2e049e0644669962096c3bec920fc51dcb1b20755902b4ad49578fa0ce61578dbf6a9cff7b0c17251b",
    "signer": "0x187FC139B6A1FB1f058CE5Cb07C11E7C6E49695B",
    "userId": "132489194"
  }
}