{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "673427724",
    "entityType": "User",
    "nonce": "0x2c34b4a8a666419f6528d4b97e5e43fd0625f168346f0e870acd38c944301649",
    "signature": "0x1e419f4e9f52b7a99bff0ef5bdfc49703a5c9aff972743ec3ea0d8e258d607451ac34249f423dbe49b3f87d5835371d48f8fe3988928a200837cc1b22698784c1b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}