{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x325da814314342784e1fdd59799ea6d562c8063a459d6fe0248150cffd8fa40d",
    "signature": "0x342352d66faac9c77797e25cb725639f230392ef8b080917c196a204a8c87d566e52da1773b027cfaa7e540cc8225d9258c9c831545da777b5315158a867f5541c",
    "signer": "0x149dB7F9Bc7734a6AB271f952D733afb4E82d040",
    "userId": "740584619"
  }
}