{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x68e36097d554c4080aff3bded53fb492113092fceada79e7997a3aeea578418d",
    "signature": "0x263b508144b8e8e060aa8c8e8d2123983d4f881f48e3dfb29fcb22cade0cab916e1205aa237014145b4f04b24811e1acb5a69d271d13569e64837a2d69fc84f21b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}