{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x080554c19a7e45985ff8a8f812be62ea8721970fe6d1f8dda8756b72d4884771",
    "signature": "0xf73dd96fac17ccdfa5321a09fea8f32b02fbec282e881dc875e7bf5a642c9a1e144aeb5aa40fd6fcae39e6daf4e5b4338b2a52032bad0aaaf3db4c91d8d4c9551b",
    "signer": "0xe7c3A8b57D5E123621e7EC38D44ff443b172E8Bc",
    "userId": "99359499"
  }
}