{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399133",
    "entityType": "User",
    "nonce": "0x7439433a7d10d7c73bb386e90056ebaa5c50ce59ecd2ea12eddb18ef8e7581a0",
    "signature": "0xe98af5f1f0824948b48b274dbc0f7a793316e8156d2ac6a3c911e3487c6d91be693dc33ada1f0e76f359f85c9b51971d520e21531875ff0b593eab512df381151b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}