{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313260",
    "entityType": "User",
    "nonce": "0x90827d955747f1ab5c9648c33214c42b0b4301498d36c1b632f7b05db7c470f2",
    "signature": "0xf53a1e7b19a7f11334d1004a4199d23ba5d1481a5790807bb1a5818139aaa4ee1e83c55eb27261e974c28180915ed9110d0ea9c0ae178938eaef5653a1b6a82a1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}