{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x89dad4585cd458ddfb935ca3a7de23c1c3ba5b9a818295b5935e085657f39d6b",
    "signature": "0xb0abd9763fa3820dc79ad763d3ca43d732f36a519dd7f6eda2856dae045aa06048f2995d0ef768734cc1de9e8252a3e2dcd78aeaa9c5a8264cad63d470d70a681b",
    "signer": "0xbe92763E4992F8E84a6E26081B99e19b5f9f6D2f",
    "userId": "231207555"
  }
}