{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc2cd0afd9952282bd11af8b6861d925cbef9737db3dc3febc8c1bc1fdd6abb08",
    "signature": "0x2a24f80b4b5d95bd0f3b9f676e1e83c9b7e52e6d0b3fd4fc4c4147477d0ddc855894539b0d652f094f26b4ef584ff5c0f6cf02ac9d5cfaadaec7626bed8e37d41c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}