{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "748049499",
    "entityType": "User",
    "nonce": "0x2db57e490881ec0fd4de1d71d2d77518ae67e4ebf0e9d5a1f5c175b1060ab069",
    "signature": "0x000afeef1e80278e34504b6df6908b9a7014d778a1f5822ac2fb1e780406bff740db7ed77585d0a558ca2a398af1cb18d77018958839aa64a3d7dc2256764dc51b",
    "signer": "0x856dD60453733C7356ce2Cc02B884a7111eC7E6D",
    "userId": "15192427"
  }
}