{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x67aecabeeacdf5ed4e2b39128f301824b80be7104e59c6818c352eb7fe69b1ef",
    "signature": "0xbbbebb47a2bc0e754d95f6ce78262133b94e00a12fb50fc3ad8395fbf1c27a4959d0f92ae0c34e0c802afa8a55489bc6155c68e8994d26b1097102c0caf62d351c",
    "signer": "0x74D1fD74Bd58308BB5a6dFC0C8DEAEC4327E80B3",
    "userId": "7525656"
  }
}