{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "14737",
    "entityType": "User",
    "nonce": "0xfddb6d48f7d17181bb2454935c9252910fc1a2135198a8df76b0fcfde510a2b1",
    "signature": "0x2f2ea86a3b68a16908ab42a453b18968a5ac46f74d2cdad2fe1012fe5a58abc051703a23f7b01eaa63e2d0402e3ed5126237b0ac2da2ff552cb0e09b407de9cf1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}