{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2599",
    "entityType": "User",
    "nonce": "0x791903614b08d79d2e2feafc463db5013cddb3b5449b5dc82984e7d1e88f17a3",
    "signature": "0xeef01cc30682676fcbd83c6325da4c54a4d8f2064ac0348c419842fd7622600079563e07a5584fed99aff7198d5936b51548cd8d9c28d013c4802d31735e06221c",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}