{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297843",
    "entityType": "User",
    "nonce": "0x883620aefdf0e061aabf8a527f48fdf5a6ae069356c3d2d2f4dba461658da1c2",
    "signature": "0xec29c6eb8c3ba2d1875afd885592d852ab78ff282578b7b24ef16bb8a6b371726e0e74fe4de9707440d20c41e697e687b041f47dfc342e62584e5d41979f182e1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}