{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x403127aa18bc665ba55719afa2696cfa536b239cf1c26b6754bbc4c45391a907",
    "signature": "0x4c6a641c8c2166c65989940233e7e6c4c637f944fc01b06d583f427433a8a85053834ae128fc40ae1f9fa2864f84e4ce2b984fe0d5b33728c548aae5b883c2671c",
    "signer": "0x9DcFaE77BF00b1bA393f0b9f548cE71793f11A05",
    "userId": "888564962"
  }
}