{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755263",
    "entityType": "User",
    "nonce": "0xc5874bcc7a7351e3454c6fe94e8dbee32aa75ad6d575b9abf0512f496f512463",
    "signature": "0x816f3f655b19a33bf0f21c3e5b8e86dd63f871a1558bc10c48bf42dbc7ae7e7a1d3c95e275ca7d783fe0aad9fe349d05f6ac02a935e91d05dc76f365e269d6c51b",
    "signer": "0xdA708531501D4f46C162eDBca1D759CB6e7447c4",
    "userId": "985405611"
  }
}