{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0x332aa74ee91844ebb5676ed2a30e51be8b92688b97599dea9f15bad6491874e8",
    "signature": "0xa47ce09ce7f813850f6aa1c363ee71498f6b43d1ab7aa3dd21c9eaa35cfc73110c5e1f6ea25650b6590f0f63f49aad955522f27da09cec15845d660ec0dbbdaf1c",
    "signer": "0x009aa7b49eAF9a76b4b0e1D3C0ef92ba4e8ECEa4",
    "userId": "350390967"
  }
}