{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "688478140",
    "entityType": "User",
    "nonce": "0x0f8997a2efcb81449956f605bea176fbfacd47ab9b0edf525a32fcb535815dd4",
    "signature": "0xdd18147489912a99ffadb940794a87ddb6d7650c81d54a21fa096e0022a675595941e8e41395af67e63a6076be20a9772568a7baff334b723e9a6caed8ce27f71b",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}