{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "333593",
    "entityType": "User",
    "nonce": "0xa84d7186e95ab8ae61da52bb7d7134fcb483325592270ca4e8259e75c7043963",
    "signature": "0x1a908ca48564555c6e2c26ceb081a4b750ab1451b129a7be6fe3539801fc81e731d56c64a5deaf5db25689cbfe025e4c55a9a36c59064266b89189d5589163fc1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}