{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508076300",
    "entityType": "User",
    "nonce": "0x4b65a3fc77e9afcb30a61564631b6ae1cf8da8227090b2c1cee6bbb077484de4",
    "signature": "0xca59d4480380ba02eb654460f9f4a285f0dd8ed856520ccd27ba844a58ef8611496357081a825dd7f5c94fa7965751860c672b328df96a5d9a5f94d677769c541c",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}