{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd75d19de02fd54e780ee81d696b6109c06a7abd262a11751bf5c78d3663b0843",
    "signature": "0x8dac9b500be7361a3cafbecaa6c13bd6f7d4747763f5b9ee07df52b93297a8601eb8a7691449bc466feb18017684e7488b015b9262ff09a0d0196051a396c49d1c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}