{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5253",
    "entityType": "User",
    "nonce": "0x2f88021cb0aedbb68f9365a7a25a628db11e9e1b9ad77203929627a87d65e14c",
    "signature": "0x6bb2ca2770cd6850ff86408b169f435e746b9183ab9396a5c5408f05235270be7aca514b5bd54f90334b17b5881d92f08db9471b62695f826c928b00c9ae8cc01c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}