{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "757958666",
    "entityType": "User",
    "nonce": "0xca597cf8235198335fe0903e7a90f153470a764ca15b9710610c3e1f98e13401",
    "signature": "0x7f007d7611c541b654d4948477d0793df98bb3eeb4c438b5e6f8632bbe0603d32042f42b122bae180b4fd79422d45a9f649b1bfead7ff33985e1346754d305881b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}