{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451996",
    "entityType": "User",
    "nonce": "0xb130a9fa2bc936c5b71fbbc06617481e1c4c5371c4f65b6c6d4a5b0cc3396dab",
    "signature": "0x3a899564eea79a8ac3fd93ddc5cf6eaa5cb4e758eb81342858cf472287ea16611b95db7ddf0241765d5bdafbe245f603c3a50c4a11f991772379df880bb0983d1c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}