{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389780",
    "entityType": "User",
    "nonce": "0xee90ee3017d3ce2e90b55ee59dd3d41aae4a090eb2768559af517faaea0392fb",
    "signature": "0x8c60e4e43ef829b3a9434a2257012ba0ac4aed8414852084ad5844030f74b5943d0badf9066a0cd0aa58893829a91b010e55453f104fd1ed59e31953d4aebebd1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}