{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xdd4a37f17b22d71cc09823c122f7fa079dd78ab1cc2eaeb884c1be4920a2b804",
    "signature": "0x850ee51ca456b100663226ffaeb36e8654d60d84d821fffa059047e42754a93c22ae3e809cfd798a556d0ed768000b7111dcaea7a6b51a91b68633ca365f2ce11b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}