{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "88399",
    "entityType": "User",
    "nonce": "0xc6b0fa072b032516ca3581fe2ec6b21d6be4bc3d75237653aaec50ead7364dc9",
    "signature": "0xf49f69e4336cd76f55d13c5acc889cf85af1804dc32c7f8e4b0840e4e239581e0fe8e1cb04fbe8bdd856ce7efc17c9437fd160c59e8fd8cd19ecbb5f654d01c01b",
    "signer": "0x745895918A1926af8a7B4C34Af51BdF98bf5C7C8",
    "userId": "54958731"
  }
}