{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2f8ef7d4e4de0750692c320be7a762f68dc8d799a6f2ec0ccbe17de8ea9a3eb3",
    "signature": "0xf2885d99b096fa3c66a1377e44e073ac4dc32a4f41195d0b959824c9c2df3e5c24f82780079b5b6d7ff0a93c183deb42a2e83e4a6749cc11cd0d255260fefc081b",
    "signer": "0xf88Ce054be507EBB6C9Df38466f8E7bC0203c33d",
    "userId": "800492975"
  }
}