{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100139",
    "entityType": "User",
    "nonce": "0x45ee10615e7d399839e37048296df70b7e820e8d4a50c5b7cd24c36d5656b207",
    "signature": "0xd6a896ff2f01304ebead72187b9ee19f6de02dc98d76e98c89a8407af0ea8fc204c9c45aa0400ca9d5bc9d85fb5932d14848bfaf5ce9381137563c5a77ec5ff61b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}