{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2989",
    "entityType": "User",
    "nonce": "0x3cb24a21a06406a99f7fd80ce65ae88f4be2e5b7b0a51774d98ed3cb217b0a64",
    "signature": "0xadb6e2d411d91667aa5c193a596fb977e01d696023481377dee93496e58fdfe761af5eb29c5fe0fe1a965b187ff93dbe071b1eb228365930264733e684c894c91c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}