{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0xfdfa67e1864399e230bcecce9add76de6b55aff525d8e2eb8d68f1d3a5d596c5",
    "signature": "0x1b9e3ad300c396dd813377d47581dc416aa79c88f094cc5a69d3d49dd58ef88f69cdb0ba2b157278519affdfee02d27ae02e7bf4bc439432d0108d747a58ff421b",
    "signer": "0xec083a3c9f7e847f8676C7CAF29E433702FB2CA5",
    "userId": "224487861"
  }
}