{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x435496880c862883f6377ceaf1c312068dfb20becfe3322c734c2e23655b23a9",
    "signature": "0xa4f6de2ca7cbb8eeb1ed8ba98778ed7ac425f62b0dbc58fe90ecc04940c0a04a25c35a362890785291537cf333ca497f693d98c375b159bc250c46626e6aad431b",
    "signer": "0xCeA884bE8593BCB89cB384E6c122cB438667A215",
    "userId": "692801388"
  }
}