{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0xf307b5c261251bbca2dac429038249363a5e4edd74bce66e9b49d092403bd91b",
    "signature": "0xafb5b80b0fd5ade7577ecd6dcaac494b13a65b341abffa7f36e2b74e5969203c7be4f5431a171b27ccb60f6fe123031a1d737dc8bd7153fc88238e5f1db4b9561c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}