{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512626",
    "entityType": "User",
    "nonce": "0xb8f3f50c204815ddd58f85306e9b2300d42b22610149d311c94866a404dc6d52",
    "signature": "0x1cd20de6de9af32b408f6ca69bae806bd5e6ccc46332cd86b3bc18943452056d38b0d94bec203763de4617de853df95a18d102b7df2f3d9ed3079c95ff53341e1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}